Eyes Behind the Stars (1978)

"Eyes Behind the Stars" is a 1978 Science Fiction movie directed by Mario Gariazzo and starring by Robert Hoffmann, Nathalie Delon. A photographer and his model are on a photo shoot in a forest when they get the feeling they are being watched. The feeling becomes so strong that they decide to cut their session short and leave. Later, when they develop the photos they took, they discover what looks like alien creatures in the background.